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Morne Watt

Watt, Morne

成層火山 · Dominica · 1224m

Fumarolic clouds mark the Valley of Desolation and Boiling Lake thermal areas, NE of Morne Watt (Watt Mountain) volcano in SE Dominica. The Valley of Desolation and the Boiling Lake are major tourist attractions within the national park east of Roseau. A major eruption from Morne Watt produced pyroclastic flows about 930 years ago. The only historical eruptions on the island of Dominica were a moderately large phreatic explosion at the Valley of Desolation thermal area in 1880 and a smaller phreatic explosion in July 1997.
Fumarolic clouds mark the Valley of Desolation and Boiling Lake thermal areas, NE of Morne Watt (Watt Mountain) volcano in SE Dominica. The Valley of Desolation and the Boiling Lake are major tourist attractions within the national park east of Roseau. A major eruption from Morne Watt produced pyroclastic flows about 930 years ago. The only historical eruptions on the island of Dominica were a moderately large phreatic explosion at the Valley of Desolation thermal area in 1880 and a smaller phreatic explosion in July 1997. · 写真: Photo by Paul Jackson, 1998 (Seismic Research Unit, University of West Indies). · Wikimedia Commons
タイプ
成層火山
国
Dominica
地域
Middle America-Caribbean Volcanic Regions / Lesser Antilles Volcanic Arc
標高
1224m
座標
15.307, -61.305
最終噴火
1997年
テクトニクス環境
Subduction zone / Oceanic crust (< 15 km)
火山地形
Composite
主要岩石
Andesite / Basaltic Andesite
地質学的概要

Morne Watt (Watt Mountain) volcano lies SE of the Trois Piton/Micotrin lava-dome complex in SE Dominica, E of the capital city of Roseau. The two best-known volcanic features on Dominica, the Valley of Desolation and the Boiling Lake thermal areas, lie on the flank; both are major tourist attractions within the national park. Morne Anglais stratovolcano lies 4 km SW of Morne Watt. Soufrière Hills volcano, with dated pyroclastic-flow producing eruptions ~10,000 years ago, lies 3 km E. A major eruption from Morne Watt producing pyroclastic flows occurred ~1300 years ago. A moderately large phreatic explosion took place at the Valley of Desolation thermal area NE of Morne Watt in 1880, when ash fell over a 4-km-wide sector at the coast, 10 km from the vent. A smaller phreatic explosion occurred in July 1997, when ashfall was confined to the Valley of Desolation area. These mark the only known historical eruptions on the island.

Wikipedia の要約

英語版の要約

Morne Watt or Watt Mountain is a mountain consisting of one or more stratovolcanoes at the south end of Dominica in the eastern Caribbean Sea. With an elevation of 1,224 m (4,016 ft), it is the third highest mountain in Dominica after Morne Diablotins and Morne Trois Pitons. The mountain is home to the Boiling Lake and Valley of Desolation thermal areas, both of which are the best-known volcanic features in Dominica and major tourist attractions in Morne Trois Pitons National Park.

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噴火履歴

概要 (VEI時系列)
バーをクリックすると個別の噴火が表示されます
1800 BCE~1600 BCE · 1件 · 最大 VEI ?1001 BCE~801 BCE · 1件 · 最大 VEI ?598~798 · 1件 · 最大 VEI ?1797~1997 · 2件 · 最大 VEI 21800 BCE801 BCE1 BCE9981797

詳細タイムライン

  1. 1997年VEI 1観測記録
    1997-07-15 ~ 1997-07-15
    NE of Watt Mtn (Valley of Desolation)
  2. 1880年VEI 2観測記録
    1880-01-04 ~ 1880-01-04
    NE of Watt Mtn (Valley of Desolation)
  3. 640年 (±150年)VEI ?地質学的推定
    640 ~ 進行中
    West flank of Morne Watt
  4. 紀元前 950年 (±300年)VEI ?地質学的推定
    BCE 950 ~ 進行中
    NE of Watt Mtn (Valley of Desolation)
  5. 紀元前 1800年 (±100年)VEI ?地質学的推定
    BCE 1800 ~ 進行中
    NE of Watt Mtn (Valley of Desolation)

外部リンク

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